<template>
  <div class="container">
    <div class="app-container">
      <el-tree default-expand-all :data="depts" :props="defaultProps" :expand-on-click-node="false">
        <template v-slot="{ data }">
          <el-row
            style="width: 100%; height: 40px"
            type="flex"
            justify="space-between"
            align="middle"
          >
            <el-col>{{ data.deptName }}</el-col>
            <el-col :span="4">
              <span class="tree-manager">{{ data.leader }}</span>
              <el-dropdown @command="operateDept($event,data.deptId)">
                <span class="el-dropdown-link">
                  操作<i class="el-icon-arrow-down el-icon--right" />
                </span>
                <el-dropdown-menu slot="dropdown">
                  <el-dropdown-item command="add">添加子部门</el-dropdown-item>
                  <el-dropdown-item command="edit">编辑部门</el-dropdown-item>
                  <el-dropdown-item command="del">删除部门</el-dropdown-item>
                </el-dropdown-menu>
              </el-dropdown>
            </el-col>
          </el-row>
        </template>
      </el-tree>
    </div>
    <add-dept ref="addDept"  :current-node-id="currentNodeId" :dialog-visible.sync="dialogVisible" @updateDepart="getDepartmentList" />
  </div>
</template>

<script>
import { getDepartmentList, deleteDept } from '@/api/department'
import { listToTree } from '@/utils'
import addDept from '@/views/department/components/add-dept.vue'
export default {
  label: 'Department',
  components: { addDept },
  data() {
    return {
      currentNodeId: null,
      depts: [],
      dialogVisible: false,
      defaultProps: {
        children: 'children',
        label: 'deptName'
      }
    }
  },
  created() {
    this.getDepartmentList()
  },
  methods: {
    async getDepartmentList() {
      const result = await getDepartmentList()
      const dataArray = Object.values(result.data)
      this.depts = listToTree(dataArray, 100)
    },
    operateDept(command, deptId) {
      if (command === 'add') {
        this.dialogVisible = true
        this.currentNodeId = deptId
      } else if (command === 'edit') {
        this.dialogVisible = true
        this.currentNodeId = deptId
        // 更新props- 异步动作
        // 直接调用了子组件的方法 同步的方法
        // 要在子组件获取数据
        // 父组件调用子组件的方法来获取数据
        this.$nextTick(() => {
          this.$refs.addDept.getDeptById(deptId)// this.$refs.addDept等同于子组件的this
        })
      } else if (command === 'del') {
        this.$confirm('此操作将永久删除该部门, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(async() => {
          await deleteDept(deptId)
          this.$message.success('删除成功')
          this.getDepartmentList()
        })
      }
    }
  }
}
</script>
<style scoped>
.app-container {
  padding: 30px 140px;
  font-size: 14px;
}

.tree-manager {
  width: 50px;
  display: inline-block;
  margin: 10px;
}
</style>
